Combination try and bevel square



(No Model.)

H. W. MERRILL.

COMBINATION TRY AND BEVEL SQUARE. No. 307,787.

Patented Nov. 11, 1884.

U rrn TATES PATENT tries.

HOLLIS WV. MERRILL, OF LYNN, MASSACHUSETTS.

COMBINATION TRY AND BEVEL SQUARE.

SPECIFICATION forming part of Letters Patent No. 307,787, dated November 11, 1884-.

Application filed Juno 2, 1884.

To all whom it may concern.-

Be it known that I, HoLLIs W. MERRILL, of Lynn, county of Essex, State of Massachusetts, have invented an Improvement in Oombination Tool and Square, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object the production of a combination-tool adapted for use as a try, set, and box square, as well as a mitergage and bevel-square. The instrument is strong, handy, and compact, and can be manufactured at a cost but slightly in excess of the cost of a single try or bevel square, while one of the purposes of said invention is to overcome a defect incident to the ordinary trysquare, as will be readily seen by reference to the following description, wherein the nature of my invention is fully described, and particularly pointed out in the claims.

Figure l is an elevation of my improved combinationsquare with the movable blade shown as partly withdrawn from the handle Fig. 2, an end view showing the movable blade as closed or within the handle; Fig. 3, an elevation of a modification of myinvention, to be described; and Fig. 4, an end view of the same when closed.

My improved combination-tool consists of a handle, A, provided at one end with a rigid blade, B, disposed at right angles to said handle, and at its other end with a pivoted or movable blade, 0, adapted to shut or to be moved upon the handle and lie in the same plane therewith. In the present instance the blades, having suitable gages or measures, are of the same thickness, and, as shown in Figs. 1 and 2, are secured between two plates, a, forming the handle A, the blade B being rigidly fastened between the plates, at one end thereof, and at an angle of ninety degrees, to form the set or try square, and the blade 0 pivoted between the opposite ends of the plates a, and adapted to be shut within or placed parallel with the handle or between the plates when not in'use. The ends of the plates on,

Figs. 1 and 2, next the movable blade 0 are rounded and beveled off or chamfered, as at a, and are provided with degree marks or scales 2, which, with a center mark on the movable blade, enable saidblade to be readily (No model.)

adjusted with certainty and precision, the chamfered ends 2 enabling the degree and center marks to be brought closer together, and the latter to be more clearly seen next the reduced ends a. The movable blade has a pointed rearward extension, 6, along which the center line, 3, is carried, so that the movable blade may be adjusted with greater facility.

When it is desired to use my improved combination-tool as a try-square, the movable blade 0 may be left shut or within the handle, as shown in Fig. 2 but I prefer in almost all cases that it should be withdrawn from the handle and opened or disposed on the same side as the blade B, so as to act as a rest to prevent the otherwise free end of the handle from dropping or moving below the edge or upper surface of the article to be trued or squared, and thereby prevent untrue work, as it is well known that in using the ordinary square on smooth surfaces the blade must be pressed to the surface with sufficient force to prevent the free end of the handle from dropping or moving down the edge of the board or other thing being squared.

To use the tool as a miter-square, adjust the movable blade so that the center line, 3, registers with the forty-fivc-dcgree mark on the scales 2,when the parts will be in the position shown in full lines in Fig. 1, while for beveling work adjust said blade to cause the center line, 3, to register with any degree desired.

To use my improved square as a line-marker on shafts for laying out key-seats, the movable blade is opened on the same side of the handle as the rigid blade, and may, preferably,be parallel with said rigid blade.

As shown in Fig. 3, the handle and ninetydegree blade B may be constructed of one piece or plate only, the movable blade 0 folding over said handle, as will be readily understood, the degree-marks, for the purpose of being more readily and quickly distinguished, being on the pivoted and chamfered end of said blade, and the center mark being on the adjacent side of the handle.

A thumb-screw, 4, may be used to unite the movable blade with the handle, so that additional friction may be had when desired between the parts, as in the case of larger sizes of my improved tool or square.

I claim-- 1. The combination tool or square consisting,essentially,of a handle constructed of the plates a, parallel with each other, and of the same thickness, width, and length, each provided with the rounded and chamfered ends a, the chamfered portions having the scales, as shown, the blade B, rigidly fastened between the said p1ates,at one end thereof, as described, and the movable blade 0, pivoted between the chamfered ends of the plates, adapted to be projected from either side of the handle, and to be moved so as to be retained between the plates, and provided with a pointer, 3, all substantially as shown and described.

2. A combination tool or square consisting, essentially, of a handle provided at one end with a fixed blade arranged at an angle of ninety degrees thereto, and at its other end with a pivoted or movable blade adapted to be folded onto the handle, the said handle and pivoted blade being provided one with an extension having a center mark or pointer, and the other with a chamfered portion or end arranged relatively with the pointer, and having degree-marks or a scale on said chamfered portion, substantially as and for the purpose set forth. I

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

, HOLLIS WV. MERRILL. Vitnesses:

J AS. H. LANGE, B. J. NoYEs. 

